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How Casino Games Work: Theory and Practice

First, it's important to understand that most casino games, whether online or offline, rely on what's called a Random Number Generator (RNG) . This is software that is supposed to ensure that the game's outcomes are random. For example, when you press a button on a slot 77 rabbit machine or spin the roulette wheel, the RNG "gives out" the result.

Now, pay attention: RNG is not a magic wand that simply throws the dice and says, “Now a win will come up.” Instead, it is a complex algorithm programmed in such a way as to guarantee the casino a steady profit while still respecting the rules of fair play.

What is RTP and how does it work?

Another important thing is RTP (Return to Player) , or "return to player percentage". This is an indicator that determines what part of all bets the game theoretically returns to players in the form of winnings. For example, if the RTP is 96%, this means that out of every 100 rubles of bets, 96 rubles will sooner or later return to players, and the casino will keep 4 rubles for itself. But do not think that you will always get 96 rubles from each bet. RTP works over a long distance and includes millions of spins and bets.

Example: If you play a slot with an RTP of 96%, the casino is guaranteed to get 4% of all bets over the long term. This mechanism regulates the casino's profit, but does not actually tell you when you win or lose.

How do casinos reduce RTP?

Casinos can indeed choose which games to include in their catalogue and at what RTP level. Some slots offer the ability to vary this figure, which means that the same game can have different RTP settings between different operators. This is legal and information about this is usually stated in the game rules or on the provider's website.

For example, the popular Book of Dead slot may have an RTP of 96.2% in one casino, but only 70% in another. This is a subtlety that needs to be taken into account when choosing a casino and games.

Does the casino really control your every move?

So, now that we know how RNG and RTP work, it’s time to answer the main question: can the casino directly control your winnings ?

Answer: Directly, no. The casino does not interfere with every spin of the slot or deal of cards at the table. RNG does generate results randomly, and no one presses "win/lose" buttons behind the scenes. But that does not mean that the casino has no control over the process at all.